L-Aspartic acid L-天门冬氨酸

Estimation of Chronological Age from the Racemization Rate of l- and d-Aspartic Acid: How to Completely Separate Enantiomers from Dentin

Estimation of chronological age is essential in forensic and archeological science. The racemization method is one of the best methods to meet the demands of these scientific fields, providing both accuracy of the estimated age and simplicity

氨基环丙烷羧酸 l-aminocyclopropane－l-carboxylic acid

　　缩写为 ACC。为含于梨及苹果果汁中的非蛋白性质的氨基酸，为环状氨基酸的一种。植物体由蛋氨酸合成的乙烯的直接前体，在酶的作用下由 S-腺苷酰蛋氨酸在活体内合成。许多植物组织都具有在氧的条件下使 ACC分解生成乙烯的活性。  

L-DOPA (L-3,4-Dihydroxyphenylalanine)

The nonprotein amino acid, 3,4-dihydroxyphenylalanine (L -DOPA) (Fig. 1) is present in high concentrations (about 3–6%) in Mucuna spp. The in vitro addition of L -DOPA to the red blood cells from individuals deficient in glucose 6-phosphate